LOCK HOLD-BACK LATCH WITH ANTI-PICK DEVICE

摘要

ABSTRACT OF THE DISCLOSUREDisclosed is an improvement in the lock mechanismdescribed in U. S. Patent No. 3,073,143. The improvementcomprises barrier walls on the bolt which prevent ashim-type pick device from opening the lock mechanism. Thebarrier walls are positioned to prevent the pick device fromtripping the locking member which locks the deadlockactuator in the locked position.